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fxn/sol06.nim

Last active December 6, 2020 18:07
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sol06.nim
import strutils, sequtils, sets
var sum = 0
for group in readAll(stdin).strip.split("\n\n"):
var answers: seq[HashSet[char]]
for person in group.split("\n"):
answers.add(person.toHashSet())
sum += answers.foldl(a * b).card
echo sum
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